Final sprint decides City2Surf winner

Olympian Ben St Lawrence has won his second City2Surf, pipping Liam Adams with a final sprint to the finish line of the world's biggest fun run.

Australian long-distance runner Ellie Pashley was the first woman to finish the 14km run at Bondi Beach on Sunday.

Sam Rizzo and Madison de Rozario took out the wheelchair categories.

More than 80,000 people took part in the 14km run from Sydney's Hyde Park to Bondi Beach on Sunday.

NSW Premier Gladys Berejiklian, who was at the start of the event at Hyde Park, said she was "grateful" the state could enjoy events like this.

"It's great to see people from different stages of their fitness and different stages of their life here," she said.

Extra security was in place across the city with police officers from the dog and mounted unit as well as traffic and highway patrol working to ensure the safety of participants and spectators.

"City2Surf is a much-celebrated Sydney event and we intend to maintain that atmosphere - our priority is making sure the route and surrounding areas are safe for the tens of thousands of runners taking the 14km challenge this year," Superintendent Brad Hodder said in a statement on Saturday.

"We will have officers in and around the Bondi finish-line throughout the day to reduce the risk of anti-social behaviour and alcohol-related crime."

Roads will progressively start to reopen from 11am in the CBD while all roads in the eastern suburbs will reopen by 4pm.